Celebrities who died young

Jordan Strauss / Invision / Associated Press

Cory Monteith, star of the hit Fox series "Glee," was found dead in a Canadian hotel room, according to Vancouver police. The sudden death of the 31-year old Canadian actor came several months after he had voluntarily checked himself into a treatment facility for substance addiction.

Cory Monteith, star of the hit Fox series "Glee," was found dead in a Canadian hotel room, according to Vancouver police. The sudden death of the 31-year old Canadian actor came several months after he had voluntarily checked himself into a treatment facility for substance addiction. (Jordan Strauss / Invision / Associated Press)